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LibGUI: Add AbstractView::move_cursor() and share some movement logic

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A view can now be told to move its cursor in one of multiple directions
as specified by the CursorMovement enum.

View subclasses can override move_cursor(CursorMovement) to implement
their own cursor behavior. By default, AbstractView::move_cursor() is
a no-op.

This patch improves code sharing between TableView and TreeView. :^)
This commit is contained in:
Andreas Kling 2020-08-27 17:47:19 +02:00
parent 1b3169f405
commit 0b9d765f6b
7 changed files with 154 additions and 55 deletions
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2
Libraries/LibGUI/TreeView.h
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@ -52,8 +52,10 @@ protected:
virtual void paint_event(PaintEvent&) override;
virtual void doubleclick_event(MouseEvent&) override;
virtual void keydown_event(KeyEvent&) override;
virtual void did_update_selection() override;
virtual void did_update_model(unsigned flags) override;
virtual void move_cursor(CursorMovement) override;
private:
virtual ModelIndex index_at_event_position(const Gfx::IntPoint&, bool& is_toggle) const override;